Ejecta Size Distribution Resulting from Hypervelocity Impact of Spherical Projectiles on CFRP Laminates
Ejecta Size Distribution Resulting from Hypervelocity Impact of Spherical Projectiles on CFRP Laminates
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DOI：
10.1016/j.proeng.2013.05.061
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
M. Nishida;H. Kato;Koichi. A. Hayashi;M. Higashide
中科院分区：
文献类型：
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作者：
M. Nishida;H. Kato;Koichi. A. Hayashi;M. Higashide
研究了CFRP（碳纤维增强塑料）复合材料弹丸穿孔后弹射物的尺寸分布。喷射锥和碎片云的形状是用高速摄像机观察到的。撞击实验结束后，弹射碎片从试验室内收集。弹射到目标正面的碎片数量随着撞击速度的变化而变化。相反，不管撞击速度如何，弹射到目标背面的碎片数量几乎是相同的。这些结果也与NASA的解体模型的结果进行了比较。特征长度LC的累积数分布曲线的斜率与NASA的破裂模型的斜率基本一致。CFRP层压板喷射碎片的面积质量比分布范围在±3σ范围内及以上。
The size distributions of ejecta resulting from projectile perforation of CFRP (carbon fiber reinforced plastic) laminates were examined. The shape of the ejecta cone and the debris cloud was observed using a high-speed video camera. The ejecta fragments were collected from the test chamber after impact experiments. The number of fragments ejected on the front side of the target was altered by the impact velocity. Conversely, regardless of impact velocity, the number of fragments ejected on the rear side of the target was almost the same. The results were also compared with the results of NASA's breakup model. The slope on the cumulative number distribution curve of characteristic length, LC, was almost the same as that of NASA's breakup model. The area-to-mass ratio distribution of ejecta fragments from CFRP laminates ranged within and above the area surrounded by ±3σ of NASA's breakup model.